/Engine/Plugins/Media/ElectraUtil/Source/ElectraHTTPStream/Public/ElectraHTTPStream.h
Returns the notification delegate to which you bind a progress callback. This must be used only to add a delegate before adding the request for execution. Accessing this delegate while the request is running is not considered thread safe. Do not unbind your callback! UseCancel()instead.
[FElectraHTTPStreamNotificationDelegate](API\Plugins\ElectraHTTPStream\FElectraHTTPStreamNotificationDe-) & NotificationDelegate()